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Review government records associated with Rio Vista, California.
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Preparing Rio Vista environmental records...
Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Rio Vista, CA from EPA SDWIS.
City of Rio Vista
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 10,489 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
No EPA UCMR5 PFAS detection records shown for these water systems.
Reviewed: source records as of Q1 2026
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Rio Vista drinking-water detections. Record names come from the source database and can be broad.
Rio Vista
Army · BRAC
DoD source status: Pending
No further action after preliminary assessment/site inspection
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Watson Hollow
Reported: Nov 2026
Health-relevant causes: Mercury, Pesticides
Affected uses: Ecological, Fishconsumption, Other
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
Violation records
Last inspected: Dec 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Solano County
Assessment year: 2020
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
EPA designations apply to a specific pollutant and federal air quality standard (NAAQS). EPA can issue a clean-data determination while a formal designation remains in effect.
Sacramento Metro: Ozone
NonattainmentSerious8-Hour Ozone (2015 Standard)
Original designation: Aug 2018
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Sacramento: PM2.5
NonattainmentModeratePM-2.5 (2006 Standard)
Original designation: Dec 2009
Health effects (EPA): Cardiovascular disease, respiratory illness, premature death (EPA)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
Sacramento Metro Area
Historical standard: 0.08 ppm (8-hour)
Historical designation: Nonattainment · Subpart 2/Severe 15
Original designation: Jun 2004
Open data source: EPA final revocation ruleContinuing requirements have not been verified for this area.
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Davis-Ucd Campus
Annual mean: 6.8 Parts per billion
Observation year: 2025
Annual mean: 0.037 Parts per million
Observation year: 2025
Elk Grove-Bruceville
Annual mean: 5.1 Parts per billion
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
1 site with active cleanup or investigation
900 BEACH AVE, RIO VISTA
2.1 miles away · SOLANO County
Reported: Nov 2026
Data from EPA ECHO
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
Recently updated active/intermittent sites (1)
Data from MSHA
Solano County, CA
EPA Radon Zone Map (June 2024 release)
Solano County is EPA Radon Zone 3 (low potential). EPA defines Zone 3 counties as having predicted average indoor screening levels below 2 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
No FEMA flood-zone records shown for this report.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Solano County, CaliforniaPop. 448,747
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 6,744 | 6,373 | 7,972 |
| Poor or Fair Health | 15.8% | 15.8% | 14.2% |
| Poor Physical Health Days | 3.7 | 3.1 | 3.3 |
| Poor Mental Health Days | 5.2 | 4.7 | 4.8 |
| Adult Smoking | 11.4% | 8.8% | 15.0% |
| Adult Obesity | 29.9% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 9.0 | 7.1 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 10.2% | 10.8% | 9.6% |
| Life Expectancy | 79.4 | 79.9 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Rio Vista.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 2 violations for the City of Rio Vista.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Rio Vista.
The monitoring station at Davis-Ucd Campus recorded an annual average of 6.8 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Davis-Ucd Campus recorded an annual average of 0.037 Parts per million for ozone in 2025.
The monitoring station at Elk Grove-Bruceville recorded an annual average of 5.1 Parts per billion for nitrogen dioxide in 2025.
The radon data for Rio Vista covers Solano County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Rio Vista reports a life expectancy of 79.4 years in Solano County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Rio Vista reports 6,744 years of life lost to deaths before age 75 per 100,000 residents in Solano County, California. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Rio Vista lists fine-particle pollution (PM2.5) at 9.0 micrograms per cubic meter in Solano County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.